Transmission gearing



July 8 R924.

1,500,965 F. s. STRENG TRANSMI S S ION GEARI NG Filed Aug. :51, 9

2k 20 2f 9 u 3 23 26 45 23 30 2/ 23 2/ Inventor.

Patented July 8, 1924.

FRANK s. sesame, on mierswvxteej remastered; i

Tswana-Siteamateu T 0 all whom it may camera:

Be it known that I,-"FRANK*S.; ST'IiiiN a citizen ofthe Uriited-States; residing a Stratton'ville; in the county of ""G1arion and State ofPennsylvaniat have invented new and useful Improvements in Transmi'ssion Gearing, of which the following is a specification; f

This invention" relates to 'i'mpr'ov'einen'ts T tion, to be hereinaftenihbre fully described;

illustrated in the accompanying drawings" and pointed out in the appendedclaims. In the drawings Figure 1 isa sectional view illustratihga transmission mechanism constructed in ac cordance with the inventioirf Figure 2' is a transverse section "through the housing with parts or the mechanism removed. i

Figure '3 is a diagram "ill ustratiii'g' the? electrically operated means 'fonselectively controlling the speed changes} Referring in detail "to the drawin s" whereinlike characters of r ferenceeremie" corresponding parts, Y the mechanism 'ivliich" constitutes the present invention is-contained within a housing whichineludes lower 'sectio1r27 and an upper section"28', the sections being suitably secured "tolg'ethe'1;

Extending longitudinally 2 "through i fth'e housing and mounted within suitable bearings is a drive shaft 1 0 whichmay beeperatively connected with a motor or other source of power and which "has secured thereon collars 15. These collars are provided with annular grooves and form bearings for gears 11, 12, 13 and let which are capable of a free rotation Within these grooves.

Also mountedin suitable bearings within Y The opposite ends of the armsifiO'have pivot nets 34', whiclf are "carried" by "bracket arms a driven'shaft 20 and* fast the housing is are 'gear's '16, 17, 18 and 19;"

upon this 'shaft -the"threelast ineiitioned gears beiiiginmesh with the gears 1'2,'"13" and] 14 respectively. The gears TI and 16 are operatively con-" "mounted spoil a shaft 46:

Mounted 'foiisliding movement "upon the shaft 10 are clutch ni'embersfil which are adapted" "to"'engage 1 "clutch faces provided upon the*gears 11, 1 2, 13 and 14'. Extendk ing from th'e clutc'h members 21 are sleeves 25"whi ch 'a' re'provided with annular flanges '24; while springs 22 which are in'terposed between th'eend's of these sleeves and the collars 1 5 exert pressure to forcethe clutch niembers fll iiito engagement with the clutch faces of thege'ars." v

order to hold the clutch'members'iii "plurality dog's 23 'which extend "upward through guide openingsprovided in trans *ve'rsely arranged bars 26, upward movement "of the'dogs 23ibei1ig limited by stop pins 29; Pivotally secured to the lower ends of the dogs 23are arms 30 which are pivotally connected "to the bars 26" as'shown" at 31.

ally securedthereto' rods" 32*which "extend through guide o enings provided-"in the bars 26-andwhich'have' 'moimtedrhereon springs 33 whieh'act;to norniallydorce thedogs' 23* upward iI'ito 5 position to 'e'iigage' the flanges 'Of'the "sleeves 25f,

The rods 32 extendiipwardthroughthe' are normally spaced from the electro' 11mg 35* extending from the housing; "The magn'et's 34ers electrically? 'connected'to a generato1"36 or other so'ur'c-e"of current and "arefinc'luded in circuits with a"switclr having inde endently operated switch"elemental-I;

EL, and R, the 'latte'rbeiiig mounted upon thesteering post of an automobile or other convenient point.

tudinally movable shifting rod 38 which is mounted in'"bea'rings" 44; while" extending from this rod 38 are arms 39, 40, 41 and 4:2.

The lower or free ends of these arms carry Ext-ending through the housing is a-longihousing and have mounted thereon heads which provide armatur'es; These arn'i'atures foot lever 37 whose inner end is pivotally connected to the rod 38, while the latter extends through one end of the housing and has a slidingly pivotal connection as at 47 with the lever l3, the latter being in turn connected to the brake rod 4E3 of an automobile. I i

The rod 38 carries a contact 50 which is adapted to engage a contact 49 carried by the housing.

' In the operation of the invention assuming that the mechanism is in neutral and it is desired to engage the reversing gears 11 and 16 so :as to rotate the shaft 20, the switch elem'entR is depressed so as to energize one of the magnets 34 and attract its armature. The rod of this armature will then be moved longitudinally upward so as to withdraw the dog 23 which. engages the flange vof the clutch member 21 of the gear 11. The spring 22 will then force this clutch member to engage the clutch face of the'gear 11 and lock the latter to the shaft .10. The movement of this clutch leverwill move theshifting rod 38 longitudinally toward the left of Figure l and willdisen; gage the contact 50 from the contact 49 so as to prevent the completion of a circuit through any of the electro magnets 34.

hen it is desired to return theparts to normal position, the foot lever 37 is depressed to move the rod 38 in a reverse direction so that the clutch member will be disengaged from the clutch face of the gear 11 and moved against the tension of its spring 22 depressing the dog 23 against the the operation of the lever 43 so as-to apply' the vehicle brakes.

The invention is susceptible of var ous i changes in'its'form, proportions andminor detailsio'f construction and the rightishere inreserved to make such changes as prop- V "erly fall within the scope of the appended claims. V I

Having described the invention what is claimed is i 1. In a variable speed transmission mech anism, a drive shaft, gears mounted for rotation thereon, a driven shaft, gears fast upon the driven shaft and engaging the gears upon the drive shaft, spring actuated clutches mounted upon the drive shaft for locking the gears thereto, spring actuated means for holding the clutches in neutral position, electrically operated means for selectively releasing any of the clutch holding means, means including a shifting rod common to all of the clutches for returning gears upon the drive shaft, spring actuated clutches mounted upon the drive shaft for locking the gears thereto, a flanged collar carried by each clutch, dogs movable radially with respect to and engaging the flanges of the collars to hold the clutches in neutral position, means whereby the dogs may be selectively moved to. permit of the engagement of the clutches, a shifting rod, arms carried by the shifting rod and engaging the clutch collars and means whereby the shifting rod may be operated to cause the arms to engage the collar flanges and hold the clutches in normal position.

3. In a variable speed transmission mechanism, a drive shaft, gears mounted for rotation thereon, a driven shaft, gears fast upon the driven shaft and engaging the gears upon the drive shaft, spring actuated clutches mounted upon the drive shaft for .lOClilIlg the gears thereto, a flanged collar carried by each clutch, dogs movable radially with respect to and engaging the flanges of the collars to hold the clutches in neutral position, electro magnets, a spring actuated armature for each'magnet, means including a pivotally mounted lever connecting each of the armatures with one of the dogs, means whereby the magnets may be selectively energized to operate a dog and release a clutch to permit the latter to move .to, engaged position, means whereby the clutches may be returned to neutral positionand means for preventing the release of asecond clutch when one of said clutches is engaged. V

'In testimony whereof I aflix my signature.

FRANK S. STRENG. 

